Chemistry, 08.06.2021 07:30 esta54

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Is this reaction endothermic or exothermic and why? ( A P E X )

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PLEASE HELP AB + CD --> AD + CBIs this reaction endothermic or exothermic and why? ( A P E X )

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PLEASE HELP AB + CD --> AD + CB

Is this reaction endothermic or exothermic and why? ( A P E X )